State officials are helping investigate the discovery of bones at a home in northwest Iowa. Plymouth County Sheriff Mike Van Otterloo says his office was contacted by a contractor installing water lines at a residence after a lower jaw bone was exposed Tuesday.

Several other bones were found. The residence is two miles north of Sioux City. A Sioux City pathologist and Plymouth County’s Medical Examiner assessed the construction area.

Van Otterloo says it is believed that the bones are human and the State Medical Examiner’s office has been involved in excavation where the bones are located.

By Joane Glamm, KLEM, Le Mars

Radio Iowa